Temporal and spatial variation in agar from a population ofPterocladia capillacea(Gelidiales, Rhodophyta) from Brazil

✍ Scribed by Eurico C. Oliveira; Rosa M. Saito; José F. Santos Netol; Gracinda M. C. Garófalo

• Book ID: 104623105
• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 225 KB
• Volume: 326-327
• Category: Article
• ISSN: 1573-5141
• DOI: 10.1007/bf00047852

✦ Synopsis

Pterocladia capillacea forms dense intertidal belts in southeastern Brazil, on moderately exposed rocky coasts . The studied population extends along a gradient of water exposure, where slightly different morphotypes can be recognized . Specimens were collected monthly from 3 points along the exposure gradient of its distribution (lower, medium and higher exposure), and analyzed for agar, sulfate and 3,6 anhydrogalactose content . Agar varied from 5-32% of dried seaweed with lower yields in the winter, and higher yields in late spring/early summer. Specimens from the surf side of the distribution had a consistently higher agar content throughout the year. Sulfate varied from 1-5%, and 3,6 AG from 27-48% of dried agar, without a clear variation among the sites .